Now here’s what you’ve been waiting for, the simplest easy to follow guide that you’ll find on the web. Here’s how to install custom firmware 5.0 M33 on your fat and slim PSPs - no hack for the PSP 3000 yet.

Remember: do this at your own risk. I won’t be held responsible for anything that would happen to your PSP

1. Download the installer pack I compiled http://dino.petinqx.com/psp/5M33UPDATE.zip.
2. Extract the file you have downloaded anywhere on your computer.
3. Connect your PSP to your computer and copy the UPDATE folder you extracted to ms0:/PSP/GAME/
4. On your PSP, go to the XMB menu and scroll to GAME &gt; Memory Stick and run the 5.00 M33 update. Follow the onscreen instructions.
5. After the installation, you’ll be taken back to the XMB menu.

thanks to Dark Alex because without his hacking abilities, this wouldn’t even be here!

4.01 M33-2 Update Released

It's fast, and it's here. 4.01M33-2, fresh from the oven. This update includes some minor bug fixes, and recovery menu setting updates. Here is the changelog:

- Nids resolver: Fixed scePowerGetCpuClockFrequency issue. This is the same bug that happened in 3.80 M33-1, it won't happen again ¬¬

- Fixes recovery problems that have apperared in prior version (incorrect position of back string in language others than english, enable, and disabled strings not translated in plugins, hide pic0+pic1 couldn't be changed, language file in flash1 wasn't working..

- Spanish recovery translation typos fixed.

Likewise, download it now!

To install, make sure you have 4.01 M33 installed before proceeding. Download the archive, and copy the "UPDATE" folder to "ms0:/PSP/GAME" and run the application.

- Run it, the update will be done by Sony updater. At the end when you are asked to reboot the PSP pressing X or O, do it.Do not skip this step shutting down the psp by yourself, or you'll end with a brick.

- If you have a Japan PSP, you have to fake your region to EU or US in recovery

- Skype for Slim PSP

- GoMessenger not working waiting update Coming soon

Dark-AleX - PSP Developer [Dark_AleX]

PSP Custom Firmware 4.01 M33

Esteemed homebrew developer Dark_AleX has released PSP custom firmware 4.01 M33. In addition to minor bug fixes, this edition of the M33 firmware series of course brings 4.01 kernel support, complete with multi-language support for Recovery Mode. Instructions can be found in the included readme on how to translate the recovery text to your native language. And no, this release does not include in-XMB recovery or savestate support. As Alek noted last week, those enhancements are still planned but will likely be added in a forthcoming update.

As usual, the firmware update can be applied directly via Network Update if you are running a previous release from 3.80 M33 and onward, or by following the manual installation instructions below, provided that you have a homebrew capable PSP.

* Extract the archive. * Copy included UPDATE folder to X:/PSP/GAME
* Place the official firmware 4.01 update EBOOT, named as 401.PBP, in the newly created UPDATE folder
* Begin installation from the Game menu.

If you require a more in-depth installation walkthrough, look here. Additionally, a 4.01 M33 specific 1.5 kernel add-on is due to be released within the next couple days, possibly tonight.